Black dragon leather is used in the Crafting skill to make black d’hide armour. It can be created by giving a black dragonhide and 20 coins to a tanner (45 coins at Sbott in Canifis). Tanners can be found in Al Kharid, the Ranging Guild, Canifis and the Crafting Guild. Alternatively, after completion of the hard Fremennik Diary, players can cast Tan Leather to tan hides.
Black dragon leather is made into black d’hide armour if a player has a needle and thread.